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Built 2026-10-19 (19 October 2026)

Las Plumas Threshold Days by Year (USC00044812)

15 fixed thresholds counted per year at Las Plumas (USC00044812): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Las Plumas Thresholds

  • Las Plumas: days with a maximum temperature at or above 30 C (86 F) in 51 years, most in 1939 with 154.
  • Las Plumas: days with a maximum temperature at or above 35 C (95 F) in 51 years, most in 1936 with 99.
  • Las Plumas: days with a maximum temperature at or above 90 F (32.2 C) in 51 years, most in 1924 with 132.
  • Las Plumas: days with a maximum temperature at or above 100 F (37.8 C) in 51 years, most in 1924 with 71.
  • 15 fixed thresholds have at least one qualifying day at Las Plumas.
51 years with a qualifying day
Days at or above 30 C (86 F) per year at Las Plumas Days per year at Las Plumas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 154 in 1939. 0501001502001915: 1101916: 1061917: 1301918: 1101919: 1201920: 1191921: 1241922: 1271923: 1161924: 1491925: 1041926: 1421927: 1071928: 1291929: 991930: 1101931: 1321932: 1461933: 1491934: 1471935: 1351936: 1451937: 1381938: 1301939: 1541940: 1491941: 1141942: 1261943: 1181944: 1171945: 1181946: 1121947: 1231948: 921949: 1271950: 1241951: 1271952: 1181953: 1001954: 1051955: 1201956: 1201957: 1101958: 1251959: 1251960: 1201961: 1141962: 1151963: 1021964: 1201965: 104191519211927193319391945195119571963
Days per year at Las Plumas with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 154 in 1939.
Days at or above 30 C (86 F) per year at Las Plumas
YearDaysDecade average
1915110115.2
1916106115.2
1917130115.2
1918110115.2
1919120115.2
1920119121.6
1921124121.6
1922127121.6
1923116121.6
1924149121.6
1925104121.6
1926142121.6
1927107121.6
1928129121.6
192999121.6
1930110138.6
1931132138.6
1932146138.6
1933149138.6
1934147138.6
1935135138.6
1936145138.6
1937138138.6
1938130138.6
1939154138.6
1940149119.6
1941114119.6
1942126119.6
1943118119.6
1944117119.6
1945118119.6
1946112119.6
1947123119.6
194892119.6
1949127119.6
1950124117.4
1951127117.4
1952118117.4
1953100117.4
1954105117.4
1955120117.4
1956120117.4
1957110117.4
1958125117.4
1959125117.4
1960120112.5
1961114112.5
1962115112.5
1963102112.5
1964120112.5
1965104112.5
First to last qualifying date each year at Las Plumas For each year, a bar from the first to the last day at Las Plumas meeting 30 C (86 F). 1915: 27 May 1915 to 8 October 19151916: 26 April 1916 to 1 October 19161917: 5 May 1917 to 26 October 19171918: 1 April 1918 to 13 October 19181919: 28 April 1919 to 26 September 19191920: 26 April 1920 to 29 September 19201921: 21 April 1921 to 11 October 19211922: 24 April 1922 to 1 October 19221923: 27 February 1923 to 19 October 19231924: 6 April 1924 to 3 October 19241925: 4 May 1925 to 25 October 19251926: 20 March 1926 to 17 October 19261927: 23 April 1927 to 21 October 19271928: 6 May 1928 to 20 October 19281929: 11 May 1929 to 15 October 19291930: 24 May 1930 to 3 November 19301931: 1 March 1931 to 31 October 19311932: 11 April 1932 to 17 November 19321933: 4 April 1933 to 26 October 19331934: 10 March 1934 to 26 October 19341935: 25 April 1935 to 10 October 19351936: 10 April 1936 to 18 November 19361937: 2 May 1937 to 28 October 19371938: 18 April 1938 to 26 October 19381939: 16 March 1939 to 1 November 19391940: 10 April 1940 to 20 October 19401941: 9 March 1941 to 23 October 19411942: 5 May 1942 to 21 October 19421943: 20 May 1943 to 15 October 19431944: 2 May 1944 to 26 October 19441945: 19 April 1945 to 8 October 19451946: 22 April 1946 to 13 October 19461947: 12 April 1947 to 5 October 19471948: 8 June 1948 to 17 October 19481949: 21 April 1949 to 4 November 19491950: 18 April 1950 to 3 November 19501951: 9 April 1951 to 9 October 19511952: 17 April 1952 to 6 October 19521953: 21 April 1953 to 9 October 19531954: 15 April 1954 to 16 October 19541955: 5 May 1955 to 9 November 19551956: 15 May 1956 to 7 October 19561957: 28 April 1957 to 26 September 19571958: 9 May 1958 to 17 October 19581959: 8 April 1959 to 25 October 19591960: 10 May 1960 to 16 October 19601961: 9 June 1961 to 18 October 19611962: 12 April 1962 to 1 October 19621963: 17 May 1963 to 4 October 19631964: 27 April 1964 to 20 October 19641965: 25 April 1965 to 26 October 196519151922192919361943195019571964JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Las Plumas meeting 30 C (86 F).
First to last qualifying date each year at Las Plumas
YearFirst dateLast date
19151915-05-271915-10-08
19161916-04-261916-10-01
19171917-05-051917-10-26
19181918-04-011918-10-13
19191919-04-281919-09-26
19201920-04-261920-09-29
19211921-04-211921-10-11
19221922-04-241922-10-01
19231923-02-271923-10-19
19241924-04-061924-10-03
19251925-05-041925-10-25
19261926-03-201926-10-17
19271927-04-231927-10-21
19281928-05-061928-10-20
19291929-05-111929-10-15
19301930-05-241930-11-03
19311931-03-011931-10-31
19321932-04-111932-11-17
19331933-04-041933-10-26
19341934-03-101934-10-26
19351935-04-251935-10-10
19361936-04-101936-11-18
19371937-05-021937-10-28
19381938-04-181938-10-26
19391939-03-161939-11-01
19401940-04-101940-10-20
19411941-03-091941-10-23
19421942-05-051942-10-21
19431943-05-201943-10-15
19441944-05-021944-10-26
19451945-04-191945-10-08
19461946-04-221946-10-13
19471947-04-121947-10-05
19481948-06-081948-10-17
19491949-04-211949-11-04
19501950-04-181950-11-03
19511951-04-091951-10-09
19521952-04-171952-10-06
19531953-04-211953-10-09
19541954-04-151954-10-16
19551955-05-051955-11-09
19561956-05-151956-10-07
19571957-04-281957-09-26
19581958-05-091958-10-17
19591959-04-081959-10-25
19601960-05-101960-10-16
19611961-06-091961-10-18
19621962-04-121962-10-01
19631963-05-171963-10-04
19641964-04-271964-10-20
19651965-04-251965-10-26

Every Fixed Threshold

Fixed thresholds at Las Plumas
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days511541939104
35 C (95 F): Days5199193628
40 C (104 F): Days493819336
45 C (113 F): Days10619331
90 F (32.2 C): Days51132192466
100 F (37.8 C): Days517119248
110 F (43.3 C): Days271419333
0 C (32 F): Frost days (min493719297
20 C (68 F): Tropical nights (min5066195825
25 C (77 F): Days with min24719186
10 mm (0.39 in): Days with 10 mm or more rain3959194131
25 mm (0.98 in): Days with 25 mm or more rain3934194118
50 mm (1.97 in): Days with 50 mm or more rain391519408
100 mm (3.94 in): Days with 100 mm or more rain19319502
200 mm (7.87 in): Days with 200 mm or more rain1119621

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

  • Data for Las Plumas threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).